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Biology Question on Nutrition

Nitrogen is absorbed by plants in form of

A

NO3−NO^-_3

B

NH3NH_3

C

NO2−NO^-_2

D

both (a) and (c)

Answer

both (a) and (c)

Explanation

Solution

Plants obtain nitrogen from soil as NO3−NO_3^- (nitrate), NH4+NH_4^+ (ammonium) and NO2−NO_2^- (nitrite) ions. Nitrate and nitrite are reduced to ammonium state which is then incorporated into amino acids, proteins and other organic substances.